8 files changed, 38 insertions, 22 deletions
diff --git a/app/views/layouts/_theme.html.haml b/app/views/layouts/_theme.html.haml
new file mode 100644
index 000000000..71e661de6
--- /dev/null
+++ b/app/views/layouts/_theme.html.haml
@@ -0,0 +1,13 @@
+- if theme
+  - if theme[:pack] != 'common' && theme[:common]
+    = render partial: 'layouts/theme', object: theme[:common]
+  - if theme[:pack]
+    - pack_path = theme[:flavour] ? "flavours/#{theme[:flavour]}/#{theme[:pack]}" : "core/#{theme[:pack]}"
+    = javascript_pack_tag pack_path, crossorigin: 'anonymous'
+    - if theme[:skin]
+      - if !theme[:flavour] || theme[:skin] == 'default'
+        = stylesheet_pack_tag pack_path, media: 'all', crossorigin: 'anonymous'
+      - else
+        = stylesheet_pack_tag "skins/#{theme[:flavour]}/#{theme[:skin]}/#{theme[:pack]}", media: 'all', crossorigin: 'anonymous'
+    - theme[:preload]&.each do |link|
+      %link{ href: asset_pack_path("#{link}.js"), crossorigin: 'anonymous', rel: 'preload', as: 'script' }/
diff --git a/app/views/layouts/admin.html.haml b/app/views/layouts/admin.html.haml
index e7a163c92..3048e0e6a 100644
--- a/app/views/layouts/admin.html.haml
+++ b/app/views/layouts/admin.html.haml
@@ -1,6 +1,5 @@
 - content_for :header_tags do
   = render_initial_state
-  = javascript_pack_tag 'public', crossorigin: 'anonymous'
 
 - content_for :content do
   .admin-wrapper
diff --git a/app/views/layouts/application.html.haml b/app/views/layouts/application.html.haml
index 7b9434d6f..f4f8744e9 100755
--- a/app/views/layouts/application.html.haml
+++ b/app/views/layouts/application.html.haml
@@ -26,18 +26,25 @@
 
     %title= content_for?(:page_title) ? safe_join([yield(:page_title).chomp.html_safe, title], ' - ') : title
 
-    = stylesheet_pack_tag 'common', media: 'all', crossorigin: 'anonymous'
-    = stylesheet_pack_tag current_theme, media: 'all', crossorigin: 'anonymous'
-    = javascript_pack_tag 'common', crossorigin: 'anonymous'
-    = javascript_pack_tag "locale_#{I18n.locale}", crossorigin: 'anonymous'
+    = javascript_pack_tag "locales", crossorigin: 'anonymous'
+    - if @theme
+      - if @theme[:supported_locales].include? I18n.locale.to_s
+        = javascript_pack_tag "locales/#{@theme[:flavour]}/#{I18n.locale}", crossorigin: 'anonymous'
+      - elsif @theme[:supported_locales].include? 'en'
+        = javascript_pack_tag "locales/#{@theme[:flavour]}/en", crossorigin: 'anonymous'
     = csrf_meta_tags
     %meta{ name: 'style-nonce', content: request.content_security_policy_nonce }
 
     = stylesheet_link_tag '/inert.css', skip_pipeline: true, media: 'all', id: 'inert-style'
-    = stylesheet_link_tag custom_css_path, skip_pipeline: true, host: root_url, media: 'all'
 
     = yield :header_tags
 
+    -# These must come after :header_tags to ensure our initial state has been defined.
+    = render partial: 'layouts/theme', object: @core
+    = render partial: 'layouts/theme', object: @theme
+
+    = stylesheet_link_tag custom_css_path, skip_pipeline: true, host: root_url, media: 'all'
+
   %body{ class: body_classes }
     = content_for?(:content) ? yield(:content) : yield
 
diff --git a/app/views/layouts/auth.html.haml b/app/views/layouts/auth.html.haml
index 6096eada4..34f6b38ec 100644
--- a/app/views/layouts/auth.html.haml
+++ b/app/views/layouts/auth.html.haml
@@ -1,6 +1,3 @@
-- content_for :header_tags do
-  = javascript_pack_tag 'public', crossorigin: 'anonymous'
-
 - content_for :content do
   .container-alt
     .logo-container
diff --git a/app/views/layouts/embedded.html.haml b/app/views/layouts/embedded.html.haml
index e74bff9cc..210ac101d 100644
--- a/app/views/layouts/embedded.html.haml
+++ b/app/views/layouts/embedded.html.haml
@@ -11,12 +11,16 @@
     - if storage_host?
       %link{ rel: 'dns-prefetch', href: storage_host }/
 
-    = stylesheet_pack_tag 'common', media: 'all', crossorigin: 'anonymous'
-    = stylesheet_pack_tag Setting.default_settings['theme'], media: 'all', crossorigin: 'anonymous'
-    = javascript_pack_tag 'common', integrity: true, crossorigin: 'anonymous'
-    = javascript_pack_tag "locale_#{I18n.locale}", integrity: true, crossorigin: 'anonymous'
     = render_initial_state
-    = javascript_pack_tag 'public', integrity: true, crossorigin: 'anonymous'
+    = javascript_pack_tag 'locales', crossorigin: 'anonymous'
+    - if @theme
+      - if @theme[:supported_locales].include? I18n.locale.to_s
+        = javascript_pack_tag "locales/#{@theme[:flavour]}/#{I18n.locale}", crossorigin: 'anonymous'
+      - elsif @theme[:supported_locales].include? 'en'
+        = javascript_pack_tag "locales/#{@theme[:flavour]}/en", crossorigin: 'anonymous'
+    = render partial: 'layouts/theme', object: @core
+    = render partial: 'layouts/theme', object: @theme
+
   %body.embed
     = yield
 
diff --git a/app/views/layouts/error.html.haml b/app/views/layouts/error.html.haml
index 852a0c69b..55da5de3f 100644
--- a/app/views/layouts/error.html.haml
+++ b/app/views/layouts/error.html.haml
@@ -5,10 +5,9 @@
     %meta{ charset: 'utf-8' }/
     %title= safe_join([yield(:page_title), Setting.default_settings['site_title']], ' - ')
     %meta{ content: 'width=device-width,initial-scale=1', name: 'viewport' }/
-    = stylesheet_pack_tag 'common', media: 'all', crossorigin: 'anonymous'
-    = stylesheet_pack_tag Setting.default_settings['theme'], media: 'all', crossorigin: 'anonymous'
-    = javascript_pack_tag 'common', crossorigin: 'anonymous'
-    = javascript_pack_tag 'error', crossorigin: 'anonymous'
+    = javascript_pack_tag "locales", crossorigin: 'anonymous'
+    = render partial: 'layouts/theme', object: (@core || { pack: 'common' })
+    = render partial: 'layouts/theme', object: (@theme || { pack: 'error', flavour: 'glitch', common: { pack: 'common', flavour: 'glitch', skin: 'default' } })
   %body.error
     .dialog
       .dialog__illustration
diff --git a/app/views/layouts/mailer.html.haml b/app/views/layouts/mailer.html.haml
index 43c855927..288c473d2 100644
--- a/app/views/layouts/mailer.html.haml
+++ b/app/views/layouts/mailer.html.haml
@@ -4,7 +4,7 @@
     %meta{ 'http-equiv' => 'Content-Type', 'content' => 'text/html; charset=utf-8' }/
     %meta{ name: 'viewport', content: 'width=device-width, initial-scale=1.0, shrink-to-fit=no' }
 
-    = stylesheet_pack_tag 'mailer'
+    = stylesheet_pack_tag 'core/mailer'
   %body{ dir: locale_direction }
     %table.email-table{ cellspacing: 0, cellpadding: 0 }
       %tbody
diff --git a/app/views/layouts/modal.html.haml b/app/views/layouts/modal.html.haml
index bd2dcc132..5d08d7848 100644
--- a/app/views/layouts/modal.html.haml
+++ b/app/views/layouts/modal.html.haml
@@ -1,6 +1,3 @@
-- content_for :header_tags do
-  = javascript_pack_tag 'public', crossorigin: 'anonymous'
-
 - content_for :content do
   - if user_signed_in? && !@hide_header
     .account-header